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<title>aert1.0/5.2.1</title>
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<table summary="This data table should use markup to associate multiple levels of row and column headers">
	<caption>This data table should use markup to associate multiple levels of row and column headers</caption>

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		<th>ID</th><th colspan="2">System<br>Color or Name</th><th>Required</th>
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		<td>a-1</td><td>blue</td><td></td><td>yes</td>
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		<td>a-2</td><td></td><td>Susan</td><td>yes</td>
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		<td>a-3</td><td>green</td><td></td><td>no</td>
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		<td>a-4</td><td>orange</td><td></td><td>no</td>
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		<td>a-5</td><td></td><td>Frank</td><td>yes</td>
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		<td>a-6</td><td></td><td>Harold</td><td>no</td>
	</tr>
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